I cut the inside of my lip last week and it turned into a canker sore. It has been a week and it has gotten bigger and isnt going away. It hurts like h**l anytime I move my mouth or it gets touched by anything. I have been washing it with warm salt water and putting med stuff on it and staying away from certain acidic foods. I am getting worried just because i have never had one this long. Anybody have any remedies that could help it?